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87 Merc 35hp beeping

andyfarfsing

New member
I just mounted this engine on my pontoon. On the donor boat, everything seemed fine. I swapped onto my boat, rebuilt the carb, fuel pump, and changed head gasket. Now as soon as the key is switched on there is a constant beep coming from the controls. It won’t stop.

Engine is not oil injected. New gas. Good fuel pressure.

Any ideas?
 
If its a solid beeeeeeeep that the overheat circuit. If it has the temp sensor on then water jacket check to see if its wire correctly or pinched.
 
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